Home / 15,059.47-20,782.29-8,345.65

Finding the Fourth Proportional to 15,059.47, 20,782.29 and 8,345.65

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Solution

The fourth proportional to 15,059.47, 20,782.29 and 8,345.65 is: 11,517.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,059.47 : 20,782.29 = 8,345.65 : x
  2. Step 2: Convert to fraction form
    15,059.47/20,782.29 = 8,345.65/x
  3. Step 3: Cross multiply
    15,059.47x = 20,782.29 × 8,345.65
  4. Step 4: Simplify right side
    15,059.47x = 173,441,718.54
  5. Step 5: Solve for x
    x = 173,441,718.54/15,059.47
  6. Step 6: Final answer
    x = 11,517.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.